Servicing The Spark Arrester; Fuel System Maintenance; Servicing The Electronic Fuel; Injection System - Toro 74255 Operator's Manual

2. Tighten the spark plug(s) to 20 ft-lb (27 N⋅m).
3. Push the wire(s) onto the spark plug(s)
(Figure 42).

Servicing the Spark Arrester

Inspect the spark arrester every 50 hours for
damage, such as holes in the screen, and for
buildup on the screen. If it is damaged, replace
it with a new spark arrester. If it is dirty, remove
it and clean the screen with a wire brush and/or
soak it in solvent.
Fuel System
Maintenance

Servicing the Electronic Fuel

Injection System

This machine contains an electronic fuel injection
system. It controls the fuel flow under different
operating conditions.
Checking the Malfunction Indicator
Light
If the malfunction indicator light (MIL) illuminates,
during operation, the electronic control unit
(ECU) has detected a problem or fault in the
electronic fuel injection (EFI) system.
Once the MIL illuminates, initial trouble shooting
checks should be made. Refer to Troubleshooting,
page 58, under the MIL section.
If these checks do not correct the problem, further
diagnosis and servicing by an Authorized Service
Dealer is necessary.

Servicing the Fuel Filter

Replace the high pressure fuel filter after every
1500 operating hours or more frequently under
extremely dusty or dirty conditions.
Ensure that an Authorized Service Dealer replaces
the fuel filter and any components for the fuel
system.
Fuel system components are under high
pressure. Use of improper components can
result in system failure, gasoline leakage
and possible explosion.
• Ensure that an Authorized Service
Dealer replace the fuel filter and any
components for the fuel system.
• Use only approved fuel lines, hose
clamps and fuel filters for high pressure
systems.

Draining The Fuel Tank

The fuel system is under pressure. Do not
attempt to drain the fuel tank. Ensure that an
Authorized Service Dealer drains the fuel tank and
services any components for the fuel system.
Electrical System
Maintenance

Servicing the Battery

Warning
CALIFORNIA
Proposition 65 Warning
Battery posts, terminals, and related
accessories contain lead and lead
compounds, chemicals known to the State of
California to cause cancer and reproductive
harm. Wash hands after handling.
Battery electrolyte contains sulfuric acid
which is a deadly poison and causes severe
burns.
Do not drink electrolyte and avoid contact
with skin, eyes or clothing. Wear safety
glasses to shield your eyes and rubber gloves
to protect your hands.
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